[The behavior of male Danio rerio after exposure of fish embryos to a simulated geomagnetic storm].

Embryos of the zebrafish, Danio rerio, were exposed to a simulated geomagnetic storm during 24 hours. Fish, developed from these embryos, left a start chamber to an aquarium more readily in comparison to those reared in a normal geomagnetic field. On the other hand, general locomotor activity in fish was not essentially different between the two groups. We hypothesize that an exposure to a geomagnetic storm during embryonic period results in enhanced tolerance to stress caused by a novel environment. A low level stress is in turn a subject to further exploration.

[Vein extractor]. / Venékstractor.

Proposed veinextractor is used for dissection and extraction of varicose and thrombosed veins of the low limbs. It consists of thin pivot, the head of vohich looks like hemicylinder, lateral and buttend sides are made ovalshaped, conjugated between themselves and sharpened. The application of the veinextractor has enabled to decrease traumatisation and to improve cosmetic effect of the operation.